Tagged in FB Post

One of my 6 sisters tagged me in the most ridiculous post on FB.
It was implicating that four of us sisters were best buds and prone to get into mischief together.
The sister who did the tagging is the same one (in the past) who told me I was one of the lesser sisters, that she would never invite me to her house again, and I have not been on particular chummy terms with.
And I wonder what happened to the two other missing sisters?
Why were they not tagged?
The whole concept was nothing close to reality and I'm wondering why she felt the need to do something like this?
The sister that I'm closest to thinks that she feels left out and then tries to force herself into some kind of companionship.
I'm not sure ?
It's so far from reality.
I read that narcissist to do this to see if you'll respond.
I honestly just ignored it.